问题 单项选择题 共用题干题

患者男,40岁,右上2缺失,余留牙无异常,咬合关系良好,要求做右上123非贵金属烤瓷桥修复,比色A3 。

烤瓷冠的冠边缘要求中,下列哪项是错误的 ()

A.冠边缘整齐

B.与基牙(或患牙)密合

C.无悬突

D.颈缘与基牙(或患牙)要留有粘固料所需的空隙

E.长短合适

答案

参考答案:D

阅读理解

American schools begin in September after the long summer holidays. There are two terms in a school year, the first term is from September to January, and the second is from February to June. Most American children go to public schools.

High school students study only four or five subjects at a time. They usually go to the same classes every day, and they have an assignment(课外作业) for every class. After class they have many activities.

After high school, many students go to college. They can go to a small one or a large one. They usually have to pay a lot of money for college education (教育). But there are scholarships (奖学金) for good students, and many college students work part time in order to get money for their education.

小题1:How long do American students study in school every year? 

A.8 months

B.9 months

C.10 months

D.11 months小题2:High school students take ______ subjects at a time.

A.all

B.four

C.five

D.B or C小题3:______ can get scholarships.

A.Many college students

B.All the students

C.Good high school students

D.Good college students小题4:Many college students work part time because ______ .

A.they have many activities

B.they have a lot of free time

C.they like doing things

D.they have to pay a lot of money for their education小题5:According to the passage, which sentence is Not true?

A. American schools have long summer holidays.

B. There are two terms in the USA.

C. American students don’t do exercises after class.

D. They do part time job to get money to pay for their education.

单项选择题